75666559859 has 4 divisors (see below), whose sum is σ = 82545338040. Its totient is φ = 68787781680.

The previous prime is 75666559783. The next prime is 75666559919. The reversal of 75666559859 is 95895566657.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 75666559859 - 2¹² = 75666555763 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75666559792 and 75666559801.

It is not an unprimeable number, because it can be changed into a prime (75666559259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3439389074 + ... + 3439389095.

It is an arithmetic number, because the mean of its divisors is an integer number (20636334510).

Almost surely, 2^75666559859 is an apocalyptic number.

75666559859 is a deficient number, since it is larger than the sum of its proper divisors (6878778181).

75666559859 is a wasteful number, since it uses less digits than its factorization.

75666559859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6878778180.

The product of its digits is 612360000, while the sum is 71.

The spelling of 75666559859 in words is "seventy-five billion, six hundred sixty-six million, five hundred fifty-nine thousand, eight hundred fifty-nine".